JP2014090521A - Headphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a headphone which inhibits unexpected damage.SOLUTION: A headphone 1 includes: a C shaped head band 2; strip like arm parts 3; sound emission parts 4 respectively supported by the arm parts 3; first connection parts 5; and helical torsion coil springs 16. Each first connection part 5 connects the head band 2 with the arm part 3 so that the head band 2 and the arm part 3 rotate around a first axial core P1 arranged in parallel with a direction that heads from the head band 2 to the arm part 3. The helical torsion coil spring 16 biases the arm part 3 toward a neutral position where the arm part 3 and the head band 2 are arranged in parallel with each other when the arm part 3 is rotated around the first axial core P1.

Description

  The present invention relates to a headphone that is used, for example, on a person's head.

  Conventionally, various headphones (see, for example, Patent Document 1) have been used as headphones used on a person's head. The headphone disclosed in Patent Document 1 includes a pair of sound emitting units that house a speaker unit that generates sound, a bridge-shaped hanger that supports the sound emitting unit, a headband that is hung on a person's head, A rotation support portion that rotatably supports the hanger with respect to the headband.

  In the headphone described above, the rotation support portion positions the sound emitting portion in an arbitrary direction so that the sound emitting portion is brought into close contact with the head, and the reproduced sound generated by the speaker unit is guided to the human ear. .

Japanese Utility Model Publication No. 63-20233

  In the headphone disclosed in Patent Document 1 described above, since the sound emitting part is rotatably provided without being urged by a spring or the like by the rotation support part, the direction of the sound emitting part with respect to the headband is easily changed. It was. For this reason, the sound emission part is likely to exceed the rotation allowable range of the rotation support part, and the rotation support part and the hanger are easily damaged.

  This invention makes it an example of a subject to cope with such a problem. An object of the present invention is to provide a headphone that can suppress, for example, unexpected breakage.

In order to solve the problems and achieve the object, the headphone of the present invention according to claim 1 comprises a headband,
An arm connected to the headband;
A sound emission part supported by the arm part;
A first connecting portion that rotatably connects the headband and the arm portion around a first axis parallel to a direction from the headband toward the arm portion;
A biasing means for biasing the arm portion so that the arm portion is in a neutral position with respect to the headband when the arm portion is rotated around the first axis when the sound emitting portion is used. When,
Between the first connecting portion and the arm portion, the headband is rotatably connected around a second axis that is in the width direction of the headband and orthogonal to the first axis, and the release A second connecting part for allowing the arm part to be displaceable between a position where the sound part is deployed and a position where the sound part is folded;
It is characterized by having.

It is a perspective view of the headphones concerning one example of the present invention. It is the perspective view which looked at the 1st and 2nd connection part, maintenance mechanism, etc. which were shown by the II section in FIG. 1 from the back side. It is a disassembled perspective view of the 1st and 2nd connection part, maintenance mechanism, etc. which were shown by FIG. FIG. 4 is another exploded perspective view of the first and second connecting portions and the maintenance mechanism shown in FIG. 2. It is a disassembled perspective view of the maintenance mechanism etc. which were shown by FIG. FIG. 4 is an exploded perspective view of a third connection part and a second maintenance mechanism of the headphones shown in FIG. 1. It is a disassembled perspective view which shows the principal part of the 3rd connection part and 2nd maintenance mechanism which were shown by FIG. It is sectional drawing which shows the principal part of the 3rd connection part and 2nd maintenance mechanism which were shown by FIG. It is a perspective view explaining the state which the torsion coil spring shown by FIG. 3 has located the arm part in the neutral position. It is a perspective view explaining the state which the torsion coil spring shown by FIG. 3 is urging | biasing an arm part toward a neutral position. It is sectional drawing which shows the maintenance mechanism etc. which were shown by FIG. It is sectional drawing which shows the state by which the sound emission part shown by FIG. 11 was folded. It is sectional drawing which shows the principal part of the modification of the 3rd connection part shown by FIG. 8, and a 2nd maintenance mechanism. It is a disassembled perspective view which shows the principal part of the modification of the 3rd connection part shown by FIG. 7, and a 2nd maintenance mechanism. It is a perspective view which shows the hole for a connection of the 1st connection part shown by FIG. FIG. 16 is another perspective view showing a connection hole and the like of the first connecting portion shown in FIG. 15. FIG. 6 is another exploded perspective view of the third connection part and the second maintenance mechanism of the headphones shown in FIG. 1. It is a perspective view which shows the principal part of the 3rd connection part shown by FIG. 6, and a 2nd maintenance mechanism. It is a perspective view which shows the principal part of the 3rd connection part shown by FIG. 18, and a 2nd maintenance mechanism in a cross section. It is a perspective view of the ear pad of the headphones concerning one example of the present invention. It is sectional drawing of the ear pad which expands and shows the XXI part in FIG.

  Hereinafter, an embodiment of the present invention will be described. The headphones according to one embodiment of the present invention are configured to bias the arm portion toward the neutral position when the arm portion supporting the sound emitting portion is rotated with respect to the headband when the sound emitting portion is used. Force means are provided. By doing this, for example, when the sound emission part is brought into contact with a person's ear and the reproduction sound emitted from the speaker is heard, and the external sound is heard, the sound emission part is directed to the side opposite to the person's ear, When listening to the reproduction sound, the arm portion returns to the neutral position by the urging force of the urging means.

  As described above, when the sound emitting part is used, the arm part is kept in the neutral position, and when the sound emitting part is not used, the sound emitting part can be rotated in a desired direction. Moreover, when carrying, it can suppress that a sound emission part rotates with respect to a headband in small increments, and can suppress producing an abnormal noise. In addition, since the arm portion, that is, the sound emitting portion is positioned at the neutral position, the arm portion is prevented from exceeding the allowable rotation range of the first connecting portion, and the first connecting portion or the like is unexpectedly damaged. Can be suppressed. Further, in addition to the first connecting part, a second connecting part for rotatably connecting the first connecting part and the arm part around a second axis perpendicular to the first axis. Since the sound emitting portion is provided, the sound emitting portion can be folded so that the sound emitting portion is in close contact with the headband.

  In the present invention, the urging means includes an annular elastic deformable portion and a pair of rod-like rod-like portions, one rod-like portion is attached to the arm portion, and the other rod-like portion is attached to the headband. You may do it. In this case, the biasing means can bias the arm portion toward the neutral position with a simple structure.

  Moreover, you may provide the member for a connection which provided integrally the 1st member for a connection which comprises a 1st connection part, and the 2nd connection member which comprises a 2nd connection part. In this case, even if the second connecting portion is provided in addition to the first connecting portion, an increase in the number of parts can be suppressed.

  Furthermore, the first connecting member may be formed in a cylindrical shape containing the biasing means, and the second connecting member may be formed in a cylindrical shape containing the shaft. In this case, even if the second connecting portion is provided in addition to the first connecting portion, the enlargement of the headphones can be suppressed.

  And a fitting portion provided on the outer peripheral surface of the second connecting member at a circumferential interval, and a fitting member provided so as to be protruded and retractable from the arm portion and fitable to the fitting portion. The first urging member for urging the fitting member toward the outer peripheral surface of the second connecting member is provided, and the relative positions of the first connecting portion and the arm portion around the second axis are determined. You may provide the 2nd maintenance means to maintain. In this case, even if the second connecting portion is provided in addition to the first connecting portion, the sound emitting portion can be prevented from rotating with respect to the headband in a small amount when being carried, and abnormal noise can be generated. While being able to suppress, it can suppress that an arm part exceeds the rotation allowable range of a 2nd connection part, and can prevent that a 2nd connection part etc. are damaged unexpectedly.

  You may provide the 3rd connection part which connected the arm part rotatably to the center part of the sound emission part. In this case, the sound emission part can be positioned in an arbitrary direction.

  Also, a second attachment is formed so that the accommodating portion and the accommodated portion are engaged, and the inner surface of the accommodating portion, the end surface of the accommodated portion, and the end surface of the accommodated member are biased toward the inner surface of the accommodated portion. You may provide a force member and the 3rd maintenance means which maintains the relative position of the sound emission part around the 3rd axis, and an arm part. In this case, even if a third connecting portion is provided, the sound emitting portion can be prevented from rotating with respect to the headband in small increments during carrying, and the generation of abnormal noise can be prevented. Can be prevented from exceeding the allowable rotation range of the third connecting portion, and the third connecting portion and the like can be prevented from being damaged unexpectedly.

  Further, a convex portion may be provided on one of the end surface and the inner surface, and a concave portion may be provided on the other. Moreover, you may form so that these convex parts and recessed parts may extend linearly. In these cases, the third maintaining means can reliably maintain the relative positions of the sound emitting portion and the arm portion around the third axis.

  A plurality of fitted parts may be provided, and the second urging means may be provided between these fitted parts. In this case, the second maintaining unit can more reliably maintain the relative positions of the sound emitting unit and the arm unit around the third axis.

  One embodiment of the present invention will be described with reference to FIGS. 1 to 12 and FIGS. 15 to 19. A headphone 1 shown in FIG. 1 is put on a person's head, generates a sound, and transmits this sound (also referred to as sound information) to the person described above.

  As shown in FIG. 1, the headphone 1 includes an ear pad 11, a headband 2, a pair of arm portions 3, a pair of sound emission portions 4, a pair of first connection portions 5, and a pair of second connections. A connecting portion 6 and a pair of third connecting portions 7 are provided.

  As shown in FIG. 1, the headband 2 includes a main body portion 8 and a pair of expansion / contraction portions 9 that are attached to both end portions of the main body portion 8 so as to be extendable and contracted, and is formed in a C shape. . The headband 2 is formed in a band plate shape that is gently curved along the outer shape of the human head so that the planar shape is C-shaped across the main body portion 8 and the stretchable portion 9. The headband 2 is hung on a person's head.

  The arm 3 is formed in a slightly curved strip shape. As shown in FIG. 2, one end of the arm 3 is attached to the expansion / contraction part 9, that is, both ends of the headband 2, via the first connecting part 5 and the second connecting part 6. .

The sound emitting part 4 is formed in a thick disc shape. The sound emitting unit 4 includes a speaker case 10 made of a hard synthetic resin and formed in a thick disk shape, a speaker unit housed in the speaker case 10, and an ear pad 11. When the headband 2 is put on a person's head, the sound produced by the speaker unit is transmitted to the ear of the speaker case 10 facing the person's ear (hereinafter referred to as an acoustic radiation side). A hole or the like is provided. When an audio current is supplied to the peaker unit, a sound corresponding to the audio current is generated. The ear pad 11 is made of an elastically deformable material such as foamed polyurethane resin or non-woven fabric, is formed in an annular shape, and is affixed across the acoustic radiation side and the outer edge of the speaker case 10. The sound emitting part 4 is attached (supported) to the other end of the arm part 3 via the third connecting part 7. By contacting the ear pad 11 so as to cover the human ear, the space formed between the sound emitting unit 4 and the human ear can be made airtight, and the acoustic characteristics can be improved. In addition, transmission of sound from the outside or leakage of sound to the outside can be suppressed.

  As shown in FIG. 3, the first connecting part 5 is provided on the first connecting member 12 to which the arm part 3 is attached via the second connecting part 6 and the like, and the expansion / contraction part 9, that is, the headband 2. A connecting hole 13, a pair of pressing members 14, a washer 15, and a torsion coil spring 16 as an urging means are provided.

  As shown in FIG. 4, the first connecting member 12 includes a cylindrical body portion 17, and a flange portion 18 that protrudes in the outer circumferential direction from the expansion / contraction portion 9 of the body portion 17, that is, the edge near the headband 2. And.

  The connection hole 13 is formed in a concave shape from the distal end surface of the expansion / contraction part 9, and the planar shape thereof is formed in a round shape, and the flange portion 18 of the first connection member 12 rotates in the connection hole 13. It is formed in a similar shape that is possible. However, it is only necessary that the flange portion 18 is rotatable in the connection hole 13. For example, the flange portion 18 may be formed in a circular shape, and the connection hole 13 may be formed in an elliptical shape or a polygonal shape. On the contrary, the flange portion 18 may be elliptical or polygonal, and the connection hole 13 may be circular, and there is no particular limitation. As shown in FIG. 3, a projection 19 for positioning the convex torsion coil spring 16 from the bottom surface is provided at the center of the bottom surface of the connection hole 13. Further, as shown in FIG. 15, the outer edge portion of the bottom surface of the connection hole 13 is provided with a concave portion 6 that is concave with respect to the bottom surface.

  Further, the flange portion 18 of the first connection member 12 is provided with a convex protrusion 20 to be inserted into the recess 60 of the connection hole 13, and is fitted with the recess 60 of the connection hole 13. The rotation of the first connecting member is restricted. The concave portion 60 of the connection hole 13 is formed to have an arc shape. However, the shape is not particularly limited, and may be any shape that restricts the rotation of the first connection member. It may be formed in a similar manner. In addition, a protrusion may be formed in the connection hole 13 and a recess 60 may be formed in the first connection member, which can be changed as appropriate.

  Further, as shown in FIGS. 11 and 12, the connection hole 13 accommodates the end portion of the main body portion 17 of the first connection member 12 near the headband 2 and the flange portion 18 inside.

  The pair of pressing members 14 are formed in a flat plate shape having a C-shaped planar shape. The pair of pressing members 14 are attached to the stretchable part 9. When the pair of pressing members 14 are attached to the telescopic portion 9, as shown in FIGS. 11 and 12, the first connecting member 12 is positioned between them and between the bottom surface of the connecting hole 13. The flange portion 18 is positioned. When the flange portion 18 is positioned between the bottom surface of the connection hole 13 and the pressing member, the first connection member 12 is rotatable around a first axis P1 described later with respect to the headband 2.

  The washer 15 is formed in an annular shape. The washer 15 is accommodated in the connection hole 13 and is disposed at a position near the headband 2 of the main body portion 17. The washer 15 is inserted into the projection 19 for positioning the torsion coil spring 16 together with the torsion coil spring 16, and is fastened and fixed with a screw or the like.

  As shown in FIGS. 9 and 10, the flange portion 18 of the first connecting member 13 is provided with a rotation restricting protrusion 20 and an assembly groove 21. The rotation restricting projection 20 is provided so as to protrude from the surface of the flange portion 18 of the first connecting member 13 near the expandable portion 9. The rotation restricting protrusion 20 is formed when the first connecting member 12, that is, the arm portion 3 is attached to the expansion / contraction portion 9, that is, the headband 2, and is rotated around a first axis P <b> 1 described later. 13, the first connection member 12, that is, the range in which the arm portion 3 can rotate is regulated by contacting the concave portion 60 provided on the bottom surface of 13. The assembling groove 21 is formed in a concave shape from the surface of the flange portion 18 of the first connecting member 13 near the expandable portion 9. The assembling groove 21 accommodates one rod-shaped portion 23 of the torsion coil spring 16 to be described later, and fixes the rod-shaped portion 23.

  When the first connecting member 12 is attached to the expansion / contraction part 9, that is, the headband 2, the first connecting part 5 having the above-described configuration has the first axis P <b> 1 parallel to the direction from the headband 2 toward the arm part 3. Around the headband 2 (shown by a one-dot chain line in FIG. 1 and the like), the first connecting member 12 is rotatable. That is, since the first connecting member 12 is attached to the arm portion 3 via the second connecting portion 6, the headband 2 and the arm portion 3 are rotatably connected around the first axis P1. . The first axis P1 is coaxial with the first connection member 12 (the axis of the first connection member 12).

  The torsion coil spring 16 is made of a wire made of a metal such as iron or phosphor bronze, and as shown in FIGS. 9 and 10, an elastically deformable portion 22 formed into an annular shape by winding this wire, and a rod-like shape And a pair of rod-shaped portions 23 extending from the elastic deformation portion 22 in the outer peripheral direction of the elastic deformation portion 22. The torsion coil spring 16 is accommodated in the first connecting member 12, and the above-described protrusion 19 of the connecting hole 13 is passed through the inside to be positioned. The torsion coil spring 16 has one rod-like portion 23 accommodated in the assembly groove 21 and is attached (fixed) to the expansion / contraction portion 9 together with the washer 15 using a screw or the like. Further, the other rod-like portion 23 of the torsion coil spring 16 is attached (fixed) to the inner surface of the connection hole 13, that is, the headband 2.

  Specifically, as shown in FIG. 15 and FIG. 16, the other rod-shaped portion 23 extends along the side surface of the wall portion 61 having a shape protruding from the bottom surface portion of the connection hole 13, and the wall portion 61. It is fixed to. The wall portion 61 is formed on the opposite side of the concave portion 60 with the torsion coil spring 16 interposed therebetween so as not to hinder the movement of the one rod-shaped portion 23 in the circumferential direction. The wall 61 is formed in a direction that intersects the direction in which the recess 60 extends, but is not limited thereto, and may be formed along the direction in which the recess 60 extends. You may change suitably in order to obtain a desired elastic restoring force.

  The torsion coil spring 16 has one rod-like portion 23 attached to the first connecting member 12 (arm portion 3) and the other rod-like portion 23 attached to the connecting hole 13 (headband 2). When the one connecting portion 5, that is, the arm portion 3 is rotated around the first axis P <b> 1, as shown in FIG. 10, the elastic deformation portion 22 is elastically deformed so as to expand and contract (enlarge and contract). (FIG. 10 shows a case of enlargement) Of course, an elastic restoring force is generated for returning to a neutral state that is not elastically deformed. In FIG. 9, one rod-like portion 23 and the other rod-like portion 23 are drawn from the elastic deformation portion 22 so as to be substantially vertical. However, the present invention is not limited to this, and for example, a predetermined angle such as 120 degrees and the like The plurality of rod-like portions 23 may be pulled out as described above, and can be appropriately changed so as to obtain a predetermined elastic restoring force. Further, instead of the torsion coil spring 16, a single elastic member (for example, a natural resin such as rubber or a resin material such as polyurethane resin such as spunbond) is wound around the projection 19 of the connection hole 13, The elastic restoring force may be obtained and can be changed as appropriate. In the neutral state in which the torsion coil spring 16 shown in FIG. 9 is not elastically deformed, in the neutral position (shown in FIG. 1) where the surface of the telescopic part 9, that is, the headband 2 and the surface of the arm part 3 are substantially parallel to each other. The above-described headband and arm portion 3 are positioned. Thus, the torsion coil spring 16 moves the arm 3 toward the neutral position where the arm 3 and the headband 2 are parallel to each other when the arm 3 is rotated about the first axis P1. It will be energized. In the present specification, the position where the level difference between the arm 3 and the headband 2 is minimized is referred to as a neutral position. In the present specification, the neutral position refers to the surface of the headband 2 and the arm 3. It does not show that the surfaces are completely parallel to each other. In other words, the direction in which the surface of the arm portion 3 extends (direction from the sound emitting portion 4 toward the headband 2) and the direction in which the surface of the headband 2 extends (from the arm portion 3 toward the center portion of the headband 2). The position where the angle between the headband 2 and the surface of the arm portion 3 is completely 0 degrees is referred to as a neutral position. Not in.

  As shown in FIG. 4, the second connecting portion 6 includes a second connecting member 24, a notch 25 provided in the arm portion 3, a through hole 26 provided in the arm portion 3, a shaft 27, and the like. It has.

  The second connecting member 24 is formed in a cylindrical shape. The second connecting member 24 is connected to the end of the first connecting member 12 in a state where the axis of the second connecting member 24 intersects the axis of the first connecting member 12 (orthogonal in the illustrated example). It is formed integrally with the connecting member 12. That is, the second connecting member 24 is provided integrally with the first connecting member 12 to form the connecting member 28. As described above, the headphone 1 includes the connection member 28.

  The notch 25 is provided at one end of the arm 3, and is formed in a shape in which a part of the arm 3 is cut from the end of the one end toward the center of the arm 3. The notch 25 has the second connecting member 24 disposed inside. The through hole 26 is provided at one end of the arm 3. The through hole 26 is a hole having a round cross-sectional shape, and is provided at a position that is coaxial (communication) with the second connecting member 24 disposed in the notch 25.

  The shaft 27 is formed in a cylindrical shape whose outer diameter changes stepwise. The shaft 27 is passed through the through hole 26 and the second connecting member 24. The shaft 27 is fixed to the arm 3 by a fixing bolt 29 (shown in FIG. 4). The second connecting member 24 is attached to the arm portion 3 by fixing the shaft 27 passed through the second connecting member 24 to the arm portion 3 by the fixing bolt 29. Further, since the shaft 27 is passed inside, the second connecting member 24 naturally accommodates the shaft 27. Further, when the shaft 27 passed through the second connecting member 24 is fixed to the arm portion 3 by the fixing bolt 29, the second connecting member 24 is substantially parallel to the width direction of the headband 2 and is The arm portion 3 is rotatable around a second axis P2 orthogonal to the first axis P1.

  The second connecting portion 6 having the above-described configuration connects the first connecting portion 5 and the arm portion 3 so as to be rotatable around a second axis P2 (shown by a one-dot chain line in FIG. 1 and the like). The second axis P2 is coaxial with the second connection member 24 (the axis of the second connection member 24). As described above, the second connecting portion 6 rotates the arm portion 3 around the second axis P2 with respect to the first connecting portion 5, that is, the headband 2, so that the sound emitting portion 4 shown in FIG. The arm 3, that is, the sound emission part 4, is displaceable over the position where the sound emission part 4 is folded and the position where the sound emission part 4 shown in FIG. 12 is folded.

  In addition, the headphone 1 includes a maintenance mechanism 30 as a second maintenance means, as shown in FIG. As shown in FIG. 5, the maintenance mechanism 30 includes a plurality of concave grooves 31, a plurality of round dents 32 as a plurality of fitted portions, a plurality of receiving holes 33 (shown in FIGS. 11 and 12), a plurality of A projection plate 34 as a fitting member, and a plurality of coil springs 35 as first biasing members.

  In the illustrated example, two concave grooves 31 are provided. The concave grooves 31 are concave from the outer peripheral surface of the second connecting member 24 and extend along the circumferential direction of the second connecting member 24. The two concave grooves 31 are arranged at intervals from each other along the axis of the second connecting member 24, that is, the second axis P <b> 2. The number of the concave grooves 31 is not limited to two, and a plurality of the concave grooves 31 may be formed, such as three or four, and a plurality of round dents 32 are formed as the fitted portions so as to correspond to the number of the concave grooves 31. It doesn't matter.

  A plurality of round recesses 32 are provided on each recess 31. In the illustrated example, two round recesses 32 are provided in each recess groove 31, that is, a total of four. The round recesses 32 are provided at intervals from each other along the longitudinal direction of the recessed groove 31, that is, the circumferential direction of the second connecting member 24. The round recess 32 is formed as a recess from the outer peripheral surface of the second connecting member 24 and the bottom surface of the groove 31. The round shape of the round recess 32 is round. . Instead of the round recess 32, a recess having an elliptical or polygonal shape may be formed on the outer peripheral surface of the second connecting member 24, and can be changed as appropriate.

  In the illustrated example, two accommodation holes 33 are provided. The accommodation hole 33 is provided at the above-described end portion of the arm portion 3, and its opening portion is opposed to the concave groove 31 provided in the second connecting member 24.

  In the illustrated example, two protrusion plates 34 are provided. The protrusion plate 34 is integrally provided with a hemispherical spherical portion 36 and a columnar columnar portion 37 that is continuous with the flat bottom surface of the spherical portion 36. The spherical portion 36 and the columnar portion 37 are arranged coaxially with each other. The spherical portion 36 comes into close contact with the bottom surface of the round recess 32 and fits into the round recess 32. Further, the columnar part 37 is formed with a smaller diameter than the spherical part 36. The protruding plate 34 is loosely inserted into the accommodation hole 33 with the spherical portion 36 facing the second connecting member 24. The protruding plate 34 is provided so as to be able to project and retract from the arm portion 3 toward the second connecting member 24 by being loosely inserted into the accommodation hole 33. Further, since the spherical portion 36 is fitted into the round recess 32, the protruding plate 34 can be fitted into the round recess 32. It suffices if the spherical portion 36 is formed in a shape corresponding to the round recess 32. When the oval or polygonal recess is formed in place of the round recess 32, the spherical portion 36 is formed in an elliptical shape. It may be a part or a polygonal part, and can be changed as appropriate.

  In the illustrated example, two coil springs 35 are provided. The coil spring 35 is housed in the housing hole 33 and is provided between the bottom surface of the housing hole 33 and the protruding plate 34. The coil spring 35 is provided between the bottom surface of the accommodation hole 33 and the projection plate 34 to urge the projection plate 34 toward the second connecting member 24. Instead of the coil spring 35, a member made of rubber or a member made of polyurethane resin may be arranged as the elastic member, and it is sufficient if the protruding plate 34 can be biased toward the second connecting member 24. Instead of the coil spring 35, a known elastic member may be appropriately selected and used for the purpose of appropriately adjusting the urging force.

  In the maintenance mechanism 30 having the above-described configuration, the coil spring 35 biases the projection plate 34 toward the second connecting member 24, and the projection plate 34 is accommodated in the accommodation hole 33 facing the concave groove 31. Thus, the spherical portion 36 of the projection plate 34 is in close contact with the concave groove 31. Then, the maintaining mechanism 30 is configured such that the spherical portion 36 of the projection plate 34 enters the round recess 32 and is fitted into the round recess 32, whereby the first connecting portion 5 around the second axis P2. And the relative position of the arm 3 are maintained.

  As shown in FIGS. 6, 8, and 17 to 19, the third connecting portion 7 is provided integrally with the case holder 38 attached to the sound emitting portion 4, the notch 39, and the arm portion 3. The housing part 40, the connection shaft 41 for fixation, and the connection shaft 42 for a slide as a to-be-accepted member are provided.

  The case holder 38 is formed by integrating a flat holder main body 43 attached to the central portion on the back side (reverse side) of the sound emitting part 4 on the acoustic radiation side and a cylindrical part 44 provided on the holder main body 43. In preparation. The holder main body 43 is fixed to the central portion on the back side of the sound emitting unit 4 described above. The cylindrical portion 44 is formed in a cylindrical shape, and its axis is disposed substantially parallel to the surface of the holder main body 43.

  The notch 39 is provided at the other end portion of the arm portion 3, and is formed so that a part of the arm portion 3 is cut from the end of the other end portion toward the central portion of the arm portion 3. The notch 39 has the cylindrical portion 44 of the case holder 38 disposed inside.

  The accommodating part 40 is formed in a bottomed cylindrical shape and is provided in a pair at the other end of the arm part 3. The accommodating portion 40 opens in the notch 39. The accommodating portion 40 is provided at a position that is coaxial (communicate) with the cylindrical portion 44 of the case holder 38 disposed in the notch 39.

  The fixing connecting shaft 41 is integrally provided with a flat plate-like fixing portion 45, a standing portion 46 erected from the fixing portion 45, and a columnar cylindrical portion 47 having one end connected to the standing portion 46. ing. The fixing portion 45 is superimposed on the above-described back side of the sound emitting portion 4 and is fixed to the sound emitting portion 4. The cylindrical portion 47 is accommodated in the case holder 38, and a tip portion thereof enters the accommodating portion 40. The cylindrical portion 47 enters the housing portion 40 and is rotatable with respect to the housing portion 40.

  The slide connection shaft 42 is formed in a cylindrical shape. The slide connection shaft 42 is accommodated in the cylindrical portion 44 of the case holder 38, and a tip portion thereof enters the accommodation portion 40. The slide connection shaft 42 is accommodated in the cylindrical portion 44 of the case holder 38, so that the slide connection shaft 42 is provided in the sound emitting portion 4 via the case holder 38. The slide connection shaft 42 is housed in the housing portion 40 so as to be rotatable relative to the housing portion 40 around the third axis P <b> 3 when the distal end portion enters the housing portion 40. . The slide connection shaft 42 enters the housing portion 40 and is rotatable with respect to the housing portion 40. Furthermore, the slide connection shaft 42 is provided so as to be movable along its axis.

  In the third connecting portion 7 having the above-described configuration, the cylindrical portion 47 of the fixing connection shaft 41 and the sliding connection shaft 42 are rotatable with respect to the housing portion 40, so that the arm portion 3 is connected to the arm portion. 3 is connected to the sound emitting part 4 so as to be rotatable around a third axis P3 (indicated by a one-dot chain line in FIG. 1) along the width direction 3. The third axis P3 is parallel to the second axis P2 in a state where the first connecting member 12 of the first connecting portion 5 is positioned at the neutral position.

  The case holder 38 constituting the third connecting portion 7 is arranged so that the cylindrical portion 44 passes through the opening 55 formed near the center portion of the speaker case 10 and protrudes toward the arm portion 3. Is done. A fastening member (screw) is inserted into a through-hole portion 62 formed in the case holder 38, and is inserted into a recess 63 formed in the speaker case 10 and threaded on the inner surface. 10 is fixed. The protrusion 57 of the spring support member 54 is inserted into the case holder 38 in order to support the slide connection shaft 42 accommodated in the case holder 38 and the coil spring 51 in the case holder 38. A fastening member (screw) or the like that passes through a through-hole portion 59 formed in the spring support member 54 is inserted into the recess 58 formed in the speaker case 10 and whose inner surface is threaded, and the spring support member serves as the speaker case 10. Fixed to.

  In addition, the headphone 1 includes a second maintenance mechanism 48 as third maintenance means. As shown in FIG. 7, the second maintenance mechanism 48 includes a back surface 52 as an inner surface of the housing portion 40 formed so that the housing portion 40 and the slide connection shaft 42 are engaged, and a slide connection shaft 42. End surface 53, a linear convex portion 49 as a convex portion, a linear concave portion 50 as a concave portion, and a coil spring 51 (shown in FIG. 8) as a second urging member.

  The straight convex portion 49 is provided so as to protrude from the innermost surface of the accommodating portion 40 into which the sliding connection shaft 42 of each third connecting portion 7 enters, from the innermost surface 52 located at the innermost portion of the accommodating portion 40. The back surface 52 is opposed to an end surface 53 (described later) of the slide connection shaft 42. The straight convex portion 49 passes through the center of the back surface 52 and extends linearly.

  The linear recess 50 is provided in a recess from the end surface 53 located on the innermost side of the accommodating portion 40 of the slide connection shaft 42 of each third connecting portion 7. The linear recess 50 extends linearly through the center of the end surface 53. The linear convex portion 49 can enter the linear concave portion 50. When the linear convex portion 49 enters the linear concave portion 50, the outer surface of the linear convex portion 49 and the inner surface of the linear concave portion 50 come into close contact with each other, and the end surface 53 and the back surface 52 come into close contact with each other. The outer surface of the linear convex portion 49 and the inner surface of the linear concave portion 50 are in intimate contact, and the end surface 53 and the inner surface 52 are in intimate contact with each other, whereby the linear convex portion 49 and the linear concave portion 50 are engaged with each other. Match.

  The coil spring 51 is provided between the slide connection shaft 42 and the fixed connection shaft 41 of each third connecting portion 7, and the slide connection shaft 42 is moved toward the back of the housing portion 40, that is, the end surface. 53 is urged toward the back surface 52. The coil spring 51 is disposed between the shafts 41 and 42 by a spring support member 54 (shown in FIG. 8) attached to the sound emitting unit 4. Instead of the coil spring 51, a member made of rubber as an elastic member or a member made of polyurethane resin may be arranged, and the slide connection shaft 42 is moved toward the back of the housing portion 40, that is, It is sufficient that the end surface 53 can be biased in a direction approaching the back surface 52, and a known elastic member may be appropriately selected and used instead of the coil spring 51 for the purpose of appropriately adjusting the biasing force. Moreover, the linear convex part 49 and the linear recessed part 50 should just be mutually engaged, and do not need to extend linearly.

  In the second maintenance mechanism 48 configured as described above, the coil spring 51 urges the slide connection shaft 42 toward the back of the housing portion 40, and the linear convex portion 49 and the linear concave portion 50 are engaged with each other. The relative positions of the sound emitting part 4 and the arm part 3 around the third axis P3 are maintained.

  The headphone 1 having the above-described configuration is supplied to the speaker unit of the sound emitting unit 4 in which the audio current is written in a state where the headband 2 is hung on the person's head and the ear pad 11 of the sound emitting unit 4 covers the ear of the person. Then, a sound corresponding to the sound current is generated and the sound is transmitted to a person.

  According to this embodiment, when the arm portion 3 supporting the sound emitting portion 4 is rotated around the first axis P1 with respect to the headband 2, the arm portion 3 is biased toward the neutral position. Since the torsion coil spring 16 is provided, for example, when the sound emission part is brought into contact with the human ear to hear the reproduction sound emitted from the speaker and the external sound is heard, the sound emission part is opposite to the human ear. When the playback sound is heard again, the arm 3 is returned to the neutral position by the biasing force of the torsion coil spring 16.

  For this reason, when the sound emitting unit 4 is used, the arm 3 is kept in the neutral position, and when the sound emitting unit 4 is not used, the sound emitting unit can be rotated in a desired direction. Moreover, when carrying around, it can suppress that the sound emission part 4 rotates with respect to the headband 2 little by little, and can suppress producing an abnormal noise. Further, since the arm portion 3, that is, the sound emitting portion 4 is positioned at the neutral position, it is possible to reliably prevent the arm portion 3 from exceeding the allowable rotation range of the first connecting portion 5, and unexpectedly the first connecting portion 5 Can be prevented from being damaged.

  Further, the torsion coil spring 16 includes an annular elastic deformation portion 22 and a pair of rod-like rod-like portions 23, one rod-like portion 23 is attached to the arm portion 3, and the other rod-like portion 23 is a headband. 2 is attached. For this reason, the torsion coil spring 16 can urge the arm portion 3 toward the neutral position with a simple structure.

  Further, in addition to the first connecting portion 5, the first connecting portion 5 and the arm portion 3 are rotatably connected around a second axis P2 orthogonal to the first axis P1. Two connecting portions 6 are provided. For this reason, the sound emission part 4 can be folded so that the sound emission part 4 is in close contact with the headband 2.

  In addition, the first connecting member 12 constituting the first connecting portion 5 and the second connecting member 24 constituting the second connecting portion 6 are integrally provided. For this reason, even if the 2nd connection part 6 is provided in addition to the 1st connection part 5, the increase in a number of parts can be suppressed.

  Further, the first connecting member 12 is formed in a cylindrical shape containing the torsion coil spring 16, and the second connecting member 24 is formed in a cylindrical shape containing the shaft 27. For this reason, even if the 2nd connection part 6 is provided in addition to the 1st connection part 5, the enlargement of the headphones 1 can be suppressed.

  Moreover, the maintenance mechanism 30 which maintains the relative position of the 1st connection part 5 around the 2nd axis P2 and the arm part 3 is provided. For this reason, even if the second connecting portion 6 is provided in addition to the first connecting portion 5, it is possible to prevent the sound emitting portion 4 from rotating with respect to the headband 2 in the case of carrying. Can be prevented, and the arm portion 3 can be prevented from exceeding the allowable rotation range of the second connecting portion 6, and the second connecting portion 6 and the like can be prevented from being damaged unexpectedly.

  Further, the maintenance mechanism 30 includes a round recess 32 provided on the outer peripheral surface of the second connecting member 24 at a circumferential interval, and a protrusion that can be protruded and retracted from the arm portion 3 and fitted into the round recess 32. A projecting plate 34 that can be joined, and a coil spring 35 that biases the projecting plate 34 toward the outer peripheral surface of the second connecting member 24 are provided. For this reason, the maintenance mechanism 30 can reliably maintain the relative positions of the first connecting portion 5 and the arm portion 3 around the second axis P2.

  A third connecting portion 7 is provided that rotatably connects the arm portion 3 to the central portion of the sound emitting portion 4. For this reason, the sound emission part 4 can be positioned in more arbitrary directions.

  Moreover, the 2nd maintenance mechanism 48 which maintains the relative position of the sound emission part 4 around the 3rd axis P3 and the arm part 3 is provided. For this reason, even if the third connecting portion 7 is provided, it is possible to prevent the sound emitting portion 4 from rotating with respect to the headband 2 when carrying it, and to suppress the generation of abnormal noise. The arm portion 3 can be prevented from exceeding the allowable rotation range of the third connecting portion 7, and the third connecting portion 7 and the like can be prevented from being damaged unexpectedly.

  Moreover, the 2nd maintenance mechanism 48 is provided with the back surface 52 and the end surface 53 which mutually engage, and the coil spring 51 which urges | biases in the direction in which these mutually approach. Furthermore, the straight convex part 49 is provided in the back surface 52, the linear recessed part 50 is provided in the end surface 53, and these linear convex part 49 and the linear recessed part 50 are extended linearly. For this reason, the 2nd maintenance mechanism 48 can maintain the relative position of the sound emission part 4 and the arm part 3 around the 1st axial center P1 reliably.

  In the above-described embodiment, each of the third connecting portions 7 includes the fixing connecting shaft 41 and the sliding connecting shaft 42. However, in the present invention, as shown in FIG. May include a pair of sliding connection shafts 42, that is, a plurality of sliding connection shafts 42, and the coil spring 51 of the second maintaining mechanism 48 may be provided between the pair of sliding connection shafts 42. In this case, the second maintaining mechanism 48 can more reliably maintain the relative positions of the sound emitting unit 4 and the arm unit 3 around the third axis P3. In FIG. 13, the same parts as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  Further, in the embodiment described above, the linear convex portion 49 is provided on the back surface 52 and the linear concave portion 50 is provided on the end surface 53. However, in the present invention, the linear convex portion 49 is provided on the end surface 53 as shown in FIG. The linear recess 50 may be provided on the back surface 52. In FIG. 14, the same parts as those in the above-described embodiment are designated by the same reference numerals and the description thereof is omitted.

  Next, an earpad according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 20, the earpad 11 includes a cushion member 64 and a skin 65 that covers the cushion member 64.

  The cushion member 64 is made of a known material such as polyurethane foam obtained by foaming polyurethane resin, for example.

  The skin 65 is made of a known material such as a film made of a polyurethane resin or a sheet-like material (fabric) in which a synthetic resin for adhesion is applied to a nonwoven fabric. The former has a relatively small air permeability and the latter. Has a relatively large breathability. In particular, it is preferable to form the skin 65 with a material having a relatively small air permeability so as to ensure a sealing property between the sound emitting unit 4 and the user's ear.

  By the way, the skin 65 covers the cushion member 64 by welding or stitching together one sheet-like member to form an airtight space. In the joint portion 66 (shown in FIG. 21) joined by welding or stitching, the joint force at the joint portion 66 is reduced in a particularly severe use environment, and peeling or a change in the shape of the entire skin 65 may occur. . Further, since the bonding force of the bonding portion 66 is reduced, an airtight space in the outer skin 65 is not formed, and the sealing performance between the sound emitting portion 4 and the user's ear may be reduced. In particular, when the joint 66 is joined by stitching, the airtightness of the space in the outer skin 65 is relatively smaller than when joining by welding.

  Therefore, in order to make the coupling force of the joint portion 66 relatively large, in this embodiment, the stitching and the welding are combined to be coupled. By combining stitching and welding, for example, even if an external force acts on the joint portion 66 in the direction in which the joint portion 66 is peeled off, a decrease in the coupling force of the joint portion 66 can be suppressed by stitching. Moreover, the airtightness that is insufficient only by sewing can be made relatively large by performing welding.

  According to the embodiment described above, the following headphones 1 are obtained.

(Supplementary note) Headband 2;
An arm 3 connected to the headband 2;
A sound emission part 4 supported by the arm part 3;
A first connecting portion 5 that rotatably connects the headband 2 and the arm portion 3 around a first axis P1 parallel to a direction from the headband 2 toward the arm portion 3;
When the sound emission part 4 is used, the arm part 3 is placed in a neutral position with respect to the headband 2 when the arm part 3 is rotated around the first axis P1. A biasing means (torsion coil spring) 16 for biasing;
Between the first connecting portion 5 and the arm portion 3, it is rotatably connected around the second axis P <b> 2 in the width direction of the headband 2 and orthogonal to the first axis P <b> 1. A second connecting portion 6 that allows the arm portion 3 to be displaced between a position where the sound emitting portion 4 is deployed and a position where the sound emitting portion 4 is folded;
A headphone 1 comprising:

  According to the remarks, when the arm portion 3 supporting the sound emitting portion 4 is rotated around the first axis P1 with respect to the headband 2, the torsion biasing the arm portion 3 toward the neutral position. Since the coil spring 16 is provided, for example, when the sound emission unit 4 is brought into contact with a person's ear to hear the reproduction sound emitted by the speaker unit of the sound emission unit 4 and the external sound is heard, the sound emission unit 4 is When listening to the reproduction sound again facing away from the human ear, the arm 3 is returned to the neutral position by the urging force of the torsion coil spring 16.

  For this reason, when the sound emitting unit 4 is used, the arm unit 3 is kept in a neutral position, and when the sound emitting unit 4 is not used, the sound emitting unit 4 can be rotated in a desired direction. Further, it is possible to suppress the generation of abnormal noise. Furthermore, since the arm portion 3, that is, the sound emitting portion 4 is positioned at the neutral position, it is possible to reliably prevent the arm portion 3 from exceeding the rotation allowable range of the first connecting portion 5, and unexpectedly the first connecting portion 5. Can be prevented from being damaged.

  In addition, the Example mentioned above only showed the typical form of this invention, and this invention is not limited to an Example. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Headphone 2 Headband 3 Arm part 4 Sound emission part 5 1st connection part 6 2nd connection part 7 3rd connection part 12 1st connection member 16 Torsion coil spring (biasing means)
DESCRIPTION OF SYMBOLS 22 Elastic deformation part 23 Rod-shaped part 24 2nd connection member 25 Notch 27 Shaft 28 Connection member 30 Maintenance mechanism (2nd maintenance means)
32 Round dent (Fitting part)
34 Projection plate (fitting member)
35 Coil spring (first biasing member)
40 accommodating portion 42 connecting shaft for slide (accommodated member)
48 Second maintenance mechanism (third maintenance means)
49 Straight convex part (convex part)
50 Straight recess (recess)
51 Coil spring (second biasing member)
52 Back (inner surface)
58 End face P1 First axis P2 Second axis P3 Third axis

In order to solve the problem and achieve the object, the headphone according to claim 1, a headband,
An arm connected to the headband;
A sound emission part supported by the arm part;
A connection member for connecting the headband and the arm,
The connection member is provided so as to be rotatable around a first axis parallel to a direction from the headband toward the arm with respect to the headband;
The arm portion is provided to be rotatable about a second axis that intersects the first axis with respect to the connecting member.

Hereinafter, an embodiment of the present invention will be described. A headphone according to an embodiment of the present invention includes a headband, an arm unit coupled to the headband, a sound emitting unit supported by the arm unit, and a connection for connecting the headband and the arm unit. A connecting member, wherein the connecting member is provided to be rotatable about a first axis parallel to a direction from the headband to the arm portion with respect to the headband, and the arm portion is The connecting member is provided so as to be rotatable around a second axis that intersects the first axis.

Moreover, it is preferable that the length in the first axial direction in the connecting member is smaller than the length in the second axial direction. Further, it is preferable that the second axis rotates around the first axis.

Moreover, it is preferable that the connection member includes a main body portion protruding toward the headband. Moreover, it is preferable that the said main-body part is cylindrical shape.

Further, it is preferable that the first axial core passes through a central axis of the main body. Moreover, it is preferable that the connection member includes a shaft that connects the connection member to the arm portion.

Moreover, it is preferable that at least a part of the shaft has a cylindrical shape. Moreover, it is preferable that the said shaft is comprised including the some cylindrical shape arrange | positioned coaxially.

Further, it is preferable that the second axis core passes through the central axis of the shaft.
Moreover, it is preferable that the said 2nd axial center follows the width direction of the said arm part.

In addition, it is preferable that the first axis extends in a direction substantially perpendicular to the width direction of the headband. Moreover, it is preferable that the first axis and the second axis intersect each other inside the connection member.

The connecting member includes a main body protruding toward the headband, and a shaft that connects the connecting member to the arm, and the shaft has a length in the second axial direction. However, the length in the second axial direction of the shaft is larger than the length in the first axial direction of the main body portion. It is preferable that it is formed to be large. In addition, it is preferable that the second axis is rotated along a plane perpendicular to the first axis by rotating the arm portion around the first axis.

Further, when the sound emitting part is used, when the arm part is rotated around the first axis, the arm part is urged so as to be in a neutral position with respect to the headband. It is preferable to have a biasing means. Moreover, when the said arm part exists in a neutral position with respect to the said headband, it is preferable that a said 1st axial center is parallel to the direction which goes to the said arm part from the said headband.

Further, it is preferable that the arm portion is displaceable between a position where the sound emitting portion is developed and a position where the sound emitting portion is folded by rotation around the second axis. In addition, a connecting portion for rotatably supporting the sound emitting portion on the arm portion is provided around a third axis parallel to the second axis on the opposite side of the sound emitting side of the sound emitting portion. It is preferable. In addition, it is preferable that the third axis and the connecting part rotate around the first axis when the arm rotates around the first axis.

Claims (13)

A headband,
An arm connected to the headband;
A sound emission part supported by the arm part;
A first connecting portion that rotatably connects the headband and the arm portion around a first axis parallel to a direction from the headband toward the arm portion;
A biasing means for biasing the arm portion so that the arm portion is in a neutral position with respect to the headband when the arm portion is rotated around the first axis when the sound emitting portion is used. When,
Between the first connecting portion and the arm portion, the headband is rotatably connected around a second axis that is in the width direction of the headband and orthogonal to the first axis, and the release A second connecting part for allowing the arm part to be displaceable between a position where the sound part is deployed and a position where the sound part is folded;
Headphones characterized by comprising. The biasing means includes an annular elastic deformation portion, and a pair of rod-shaped portions formed in a rod shape and extending from the elastic deformation portion in the outer circumferential direction of the elastic deformation portion,
The headphone according to claim 1, wherein one of the pair of rod-shaped portions is attached to the arm portion, and the other is attached to the headband.   The connection which comprises the 1st connection member which comprises the said 1st connection part and is attached to the said headband, and the 2nd connection member which comprises the said 2nd connection part and is attached to the said arm part integrally The headphone according to claim 1, further comprising a member for use. The first connecting member is formed in a cylindrical shape and houses the urging means inside,
The second connecting member is disposed so as to intersect the first connecting member, is formed in a cylindrical shape connected to the first connecting member, and forms a shaft that forms the second connecting portion. The headphones according to claim 3, wherein the headphones are housed.   A plurality of fitted portions provided on the outer peripheral surface of the second connecting member at intervals in the circumferential direction; and the fitted portions provided so as to be protruded and recessed from the arm portion toward the second connecting member. A fitting member that can be fitted to a joint portion; and a first urging member that urges the fitting member toward the second connecting member, wherein the first around the second axis. The headphone according to claim 4, further comprising second maintaining means for maintaining a relative position between the connecting portion and the arm portion.   A third connecting portion that rotatably connects the arm portion around a third axis along the width direction of the arm portion on the opposite side of the sound emitting side of the sound emitting portion is provided. The headphones according to claim 1. The third connecting part is provided in the arm part, and provided in the sound emitting part, and is rotatable relative to the accommodating part around the third axis in the accommodating part. A member to be accommodated, and
The inner surface of the housing portion, the end surface of the housing portion, and the end surface of the housing member are urged toward the inner surface of the housing portion, so that the housing portion and the housing portion are engaged with each other. 7. A second urging member that comprises a third urging member, and further comprising third maintaining means for maintaining a relative position between the sound emitting portion and the arm portion around the third axis. Headphones.   8. The headphone according to claim 7, wherein a convex portion is provided on one of the end surface of the member to be accommodated and an inner surface of the accommodating portion, and a concave portion is provided on the other surface.   The headphone according to claim 8, wherein the convex portion and the concave portion are formed to extend linearly. The third connecting portion includes a plurality of the accommodated members,
The headphone according to claim 9, wherein the second urging member of the third maintaining unit is disposed between the plurality of accommodated members.   A first connecting member that constitutes the first connecting portion and is attached to the headband, and a second connecting member that constitutes the second connecting portion and is attached to the arm portion are integrally provided. The headphone according to claim 10, further comprising a connection member.   The second connecting portion includes a cylindrical second connecting member attached to the arm portion, and a plurality of fitted portions provided on the outer peripheral surface of the second connecting member at intervals in the circumferential direction. And a fitting member that can be projected and retracted from the arm portion toward the second connecting member and can be fitted into the fitted portion, and the fitting member is directed to the second connecting member. And a urging member that urges the urging member, and comprising maintaining means for maintaining a relative position between the first connecting portion and the arm portion around the second axis. The headphone according to claim 1. The arm is provided with a notch,
The second connecting portion includes a cylindrical second connecting member that is disposed in the notch and is attached to the arm portion, and a shaft that penetrates the arm portion and the second connecting member. The headphone according to claim 1, further comprising:

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